Improvement in quartz-mills



T. ROWE.

Ore Mill.

No. 67,074. Patented July 23, 1867.

Wi la 1655 5; H

THO MAS ROW'E, OF NEW YORK, N. Y. Letters Patent No. 67,074, dated July 23, 186i";

IMPROVEMENT IN QUARTZ-MILLS.

TO ALL WHOM IT MAY CONCERN:

Be it known that I, THOMAS ROWE, of 181Front street, NewYork, in the county and State of New York, have invented a new and useful improved Apparatus for Crushing and Grinding; and I do hereby-declare that the following is a full, clear, and exact description thereof, which will enable those skilled in the art to make and use the same, rcference being bad to the accompanying drawing, forming part of this specification, in which drawing- Figure 1 represents a sectional side elevation of this invention.

Figure 2 is a plan or top view of the same.

Figure 3 is a horizontal section of the hub through which the ground material discharges.

Similar letters indicate corresponding parts.

This invention relates to certain improvements in that class of apparatus for crushing and grinding commonly known by the term Chilian Mill, and extensively used for grinding linseed and other materials in the manufacture of oil, and for a great many other purposes.

- A represents the bed of my mill, on which revolve the two crushing-wheels or Inullers B. These mullers are secured to horizontal arms 0, which extend from the vertical shaft D, to which a revolving motion is imparted by gear-wheels or any other suitable means. Said shaft isstepped in a collar, E, which rises from the centre of the bed A, and this collar is hollow, and perforated with one or more channels, a, so that the material after having been exposed to the action of the mullers is discharged through the centre of the bed. In practice the collar will be perforated with a large number of radiating channels, a, which increase in width towards the inside, as shown in fig. 3, and. the outer openings of which are just large enough to allow the crushed or ground material to pass. By making the channels tapering they are prevented from clogging. The seed or other material to be crushed is fed to the bedA through the chute F, and it is pushed under the mullers by the curved rake G, while a second rake, H, prevents the same from passing through the central discharge channel or channels before it is ground to the required fineness.

In order to facilitate the operation of crushing and grinding linseed or other materials, it is desirable that the same shall be moistened with the requisite quantity of water, and it has always been a dcsideratum to find the proper means for regulating the supply of water according to the nature of the material to be crushed. This purpose I have effected by combining with the mullers a scoop-wheel, I, which works in a dish, J, filled with water, and provided with a supply pipe and float, so that it will always be filled to the requisite height. The

rial to be crushed can be adjusted with the greatest nicety. In practice I have regulated the speed of the scoopwheels by a belt running over cones placed in opposite directions, but I do not wish to confine myselfto any particular mechanism to etfect this purpose. The crushed or ground material, as the same passes ofl' through the central discharge, is carried automatically into the receiver M, a spiral conveyer being placed under the bed to effect this purpose, as shown in red outlines in fig. 1 of the drawing. By these means the operation of crushing and grinding can be combined without interruption, and much time and labor are saved. The matethe central discharge, and that no portion of it is allowed to discharge before it is crushed.

I am aware that a similar mill for crushing has been made heretofore, in which the crushed material is discharged through apertures in the bed inside the path of the mullers. With such mills it is very difiicult to prevent the discharge of some ofthe material before it is crushed to the required fineness, there being very little room for the operation of rakes. By arranging the discharge in the centre this difliculty is prevented. The material to be crushed is compelled to travel from the circumference of the bed to its centre before it is permitted to discharge, and furthermore, room enough is obtained for the rakes to operate so that no portion of the material to be crushed is permitted to reach the discharge before it has been reduced to the desired fineness.

I do not claim broadly as my invention the arrangement of a discharge inside the path of the mullers, but what I claim as new, and desire to secure by Letters Patent, is

The arrangcment'of a central discharge in the collar E, which forms the step for the vertical shaft D,.carryiug the mullcrs B and rakes G H, substantially as and for the purpose described. 7

THOMAS ROWE.

Witn csscs:

W. HAUIF, G. Brno. 

